Description

4-[(Tolyl)Amino]Benzenesulphonic Acid is a specialized organic intermediate featuring a sulfonic acid group linked to an aromatic amine structure. This compound matters for its role as a key building block in the synthesis of dyes, pigments, and functional materials, offering precise chemical functionality for advanced manufacturing. Industries that require high-performance colorants or specialty chemical synthesis, such as the textile, ink, and advanced materials sectors, are the primary users of this product.

Application

• Dye and Pigment Intermediate: A crucial precursor in the synthesis of azo dyes and other high-value colorants for textiles and inks.
• Functional Material Synthesis: Used in the production of specialty polymers and materials where sulfonic acid groups impart desired properties like solubility or ionic character.
• Chemical Research & Development: Serves as a versatile building block in organic synthesis for pharmaceutical and agrochemical research.
• Photographic Chemicals: Can be utilized in the formulation of certain light-sensitive compounds and developers.
• Corrosion Inhibitor Formulation: Potential use as a component in specialty formulations for metal surface treatment.

Basic Information

Product Name	4-[(Tolyl)Amino]Benzenesulphonic Acid
CAS No.	23117-23-9
Molecular Formula	C13H13NO3S
Molecular Weight	263.31 g/mol
Synonyms	4-(p-Tolylamino)benzenesulfonic Acid; Benzenesulfonic acid, 4-[(4-methylphenyl)amino]-; 4-(4-Methylanilino)benzenesulfonic Acid; p-(p-Toluidino)benzenesulfonic Acid; N-(4-Methylphenyl)-4-aminobenzenesulfonic Acid; 4-Amino-4'-methyl diphenylamine-2-sulfonic acid (related form); TBSA (common abbreviation).
EINECS	Contact for details

Quality Control

Our 4-[(Tolyl)Amino]Benzenesulphonic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing specifications such as assay, impurity profile, and physical characteristics are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept sealed to prevent moisture absorption, which can affect product quality and handling.

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.